Weighing-scale.



PATENTED APR. 16, 1907.

G. WALKER. WEIGHING SCALE. APPLICATION rum) SEPT. 17. 1906.

- a SHEETS-SHEET 1.

XQQW PATENSBDAPEJGJQOVQ WEEGHING SCALE.

APPLIGATION FILED {*EPT.17.1906.

3 SHEETSSHEET Z.

N0; 850,508. PATENTED APR. 16, 1907.

G. WALKER.

WBIGHING SCALE. APPLIOATION FILED SEPT. 17. 1901 3 SHBETS-SHEET 3.

' a broken-out front elevation of my scale front edges of the sides andtop are provided ward the top in order to give the front the UNITEDSTATES PATENT OFFICE.

GEORGE \VALKER, OF NEW BRITAIN, CONi EC'lICU'l, ASSIGNOR TO LAN- DERS,FRARY ANT) CLARK, OF NEW BRITAIN, CONNECTICUT, A CORPO- RATION.

WElGHlNG-SCALE.

No. 850,508. Specification of Letters Patent. Patented April 16, 1907.

Application filed September 17, 1906. Serial No. 335,000.

inciined position best shown in Fig. 2. This. front, which is also ofsheet metal, is substantially of a circular form with a downwardlyextended projection 16, the lower edge 0 1'0 (1, lUl l/U'lll. i'/ may(on/err..-

Be it known that I, GEORGE WALKER, a citizen of the United States,residing at 1 New Britain, in the county of Hartford and i State ofConnecticut, have invented certain i which is provided with integrallugs 17, that new and useful Improvements in \Veighingpass throughperforations in the base and are Scales, of which the following is aspecificaclenched on the underside thereof, as shown, tion. i for or eof the said lugs in Fig- 2. The lugs 13 My invention relates toimprovements in l and 14 pass through the perforations 15 in theweighing-scales; and the objects of my imfront I) and are clenched orbent overon the provcment are to produce a spring-scale of l outside ofthe front, as shown in Fig. 1. The the racleand-pinioh class that isprovided circular edge of the front B is provided with. a with aninclined dial, to )roduce the same i forwardlyrojectingilange 18 toreceive and by a simple and economical construction, and hold the edgeof the dial- 19. The said front to produce a scale of this class that iscllicient is also provided with two openings 20 and 21 and accurate inoperation. with a bar 2'2 between them. This bar is In the accompanyingdraWings Figure 1 is y centrallyperforated, as at 23, Fig. 1, to receivethe. inner end of the pinion and pointer shaft .24. A portion of themetal cut from with the pinion-shaftand one of the dialthe front to formthe opening 21 is turned holding screws in section. Fig. 2 is asectional View of the same on the line a: 00 of Fig. back in the rear ofthe central perforation 23 1 with some of the central parts in sideeleto form a step 25. for the pinion and ointer shaft 24, as shown inFlg. 1. The pinion and pointer shaft 24 has one of its bearings in thecentral part of the dial 19. The pinion 26 may be formed integral withor rigidly mounted upon the shaft 24. This shaft is passed through thecenter of the dial with the pinion on the back of the dial, and then thevat-ion. Fig. 3 is a sectional front view of the same on the line 3 q ofFig. 2. Fig. 4 is a front view of the main frame, together with asectional view on the line 2 2 of Fig. 2 of the swinging frame andlover. ig. 5 is a section al plan of the principal parts less the case,

latform, pointer, and pinion.

The base A is struck up of sheet metal with a flange (5, the said basebeing perforated at l suitable points for the of the dial, as shown inFig. 2, whereby the said pinion, shaft, and pointer are mounted or). the

reception of fasteningdial and may be removed.- therewith.- The lugs onthe other parts of the case, hereinafter described. The sides 7 7 andtop 8 of the dial is merely seated inside the circular flange case aremade of one piece of sheet metal bent 18 on the front and is detachablysecured in substantially into the form of an inverted U, lace by thescrews 28, the said screws enter the rounding part constituting the top.The ing threaded holes in the metal of the front B. All of the otherparts excepting the upper end of the spring 29 and mounted directly orindirectly on. the mam frame C. This frame in front view or rear view issubstantially of the the case, as shown in Figs. 3 and a vithin whichcase it .fits snugly and to which it is rigidly secured, preferably byfourscrews 30, passing through holes in t e metal. of the case intothreaded holes in the sides of the said frame. This frame is set alittle distance from the flange 10. at the re so as to with integrallugs 13 and 14, that are received (slide the back 11 up into lace fromthe hotin and pass through erforations 15 in the to'mbefore the sidesand rent are secured to front B. The front e ges of the sides 7 7 arethe base A. A swinging frame 51 is pivoted slanted baekwardly from neartheir, base toby its rear end within the u per part of the main frame Cby means of t e pintle 32. A.

sides 7 7 each have fastening-lugs 9 projecting from their lower edge,which lugs after passing through perforations in the'lase are clenchedor bent over 'to'hoid the si es andv base together, as shown in Figs. 2and 3. The rear edges of the sides and top are turned over inwardly toform a flange 10, that covi ers the top and side edges of the back 11,while the lower edge of the said back is provided with lugs 12, thatpass into or through suitable perforations in the base A. The l pointer27 is secured to its outer end in front its connections are i samecontour as 4 lever 33 is pivoted by its rear end within the frame nearits base by means of the pintle 34, The load-receiving bar or frame 351s :nohnted in an upright position, so asto reciprecate substantially ina vertical plane by being pivoted to the front end of the swinging frame31 bythe pintle 37 and pivoted by its lower end "on' the' pintle 36 tothe middle portion of the lever 33. The rear side of the bar to or frame35 is provided with a braeket arnr 38, by which the lower end of thebalancespring 29 is secured through its ordinaryhook 39. The upper endof the spring is secured to an ordinary flanged block 40, from the!center of which a threaded rod 49 ex tends up throug'ha hole in the top8 of the case and receivesan adjus'tingnut 41, that bears on the saidtop. A platform or loadsupp'ort 42 is rigidly mounted on the upper goend of the'bar or frame 35. The forward part of the raclccarrying lever33. has an upwardly-extended arm 43, to 1 the front of which the rack 44is pivoted by its up 'er end on the screw 45. The T210151 is '25 curveflatwise from end toend, on a curve of which the pintle 34 of the lever'33 is the center, and its toothed edge engages the pinion 26. Its lowerend rests upon and is snpported by the front end 46 of the lever A.- 5ring 47 on the arm 43 bears upon a lat era projection 48 on the rackwith a constant tendency to force the rack toward the pinion. Theopenings 20 and 21 in the front B permit the rack to reciprocate by theside of the pinion which is forward of the front B,

while the ends of the rack are supported by the oscillating lever, whichis mainly in the rear of the said front.

The operation in general is the same as in 4 2 other 8 ring-scales ofthe rack-and-pinion class.' he special construction of the case,

' the main frame, and connected parts enables the parts that go withinthe case to be first finounted on thermain frame C, then placed withinand secured to the body of the case by means of the said frame, afterwhich the base A is secured to the said body. The dial with the polpter,shaft, and pinion can be secured first by means of the left-handwsneofthe 50 screws 28. The rack is then free to swing back and let thepinionslip out of gear, so that the pointer may be turned. to zero on thedial, no matter what its position was when the dial was first put on.-After the onset the fastening-screws 28 is inserted, the saidscrewbeinglocated to the right' of the pinion26. The width of the rack is soprortioned tothe space between the pinion 'd'. this screw that the rackmay move 'elf, between them, while at thesame time ithe'f screw willprevent the rack from swinging away from the pinion far enough to be outof proper engagement therewith. This feature is a. great convenience inthe manupointer is in proper position the right-hand the platform theload placed. Several prior patents showkseales with an inclined dial,and one prior scale with such a dial has been found. to indicatediilercnt weight when a given-load. was placed on the front part of theplatform from that indicated when the same load was placed centrallythereon. I i

I. claim as my invention-- 1. In. a weighing-scale, the combination of acase with a load-receiving bar or frame, the raclccarrying lever andswinging, frame piv otally mounted in the case by their rear ends andalso pivotally connected with the said load-receiving bar or frame, aspring connected with the said load-receiving bar or frame acting inopposition to the load on the said J, a rack carried by the forward partof the said racleearrying lever with a portion of the said rack forwardof the front of the case, the said front having a central portion with abearing ior a shaft therein, a detachable dial secured on the front ofthe said case and havthe said dial to be removed tlnxrewitln and/to beplaced in position with the inner end of the said shaft in'theshaft-bearing of the said central portion of the front and with thepinion in engagement with the said rack.

2. In a weighing-scale, the mimliination of a case having an. inclinedfront, with the rackcarrying lover of the weighing mechanism. pivotallymounted wi thin the said case with its forward part arranged to s mgvertically, an upwardly-projecting arm at the forward part of the saidlever, a rack pivoted by its upper end to said arm with a portion of thesaid rack forward of the-central portion of the case-front, and a shaft,pinion, and pointer, with the pinion in engagement with thesaid rack onthe outside of the for- .ward of the said inclined front. 7

3. In a weigl'ling-scale, the combination of a casehaving an inclinedfront with the rack-- carrying lever of the weighing melrhaui mpivotally nounted within the said case ll/ll its for; ard part arrangedto swing vertically,

ing shaft, pointer and. pinion, mounted on- :an upwardly-projecting armat the forward eats thesame no matter uponwhat part of pinion. mountedwith the said.

aswsoe pivotally mounted within the said ease with its forward partarranged to swing vertieally, an upwardly-projeating arm at the forwardpart of the said lever, aplate-like rack pivoted by its upper end tosaidarin and enrved llatwise from end to end to conform to the are of acircle described by the front end of the said upwardlyprojeeting arm,and arotary shalt. pointer, and pinion mounted with its pinion in.engagement with the said rank.

5. in a weighing-scale, the combination of at ease having an inclinedfront with. the racl carrying lever of the weighing ineehanisn'ipivotally mounted within the said ease with its forward part arranged toswing vertically, an npwardiy-rroieeting arm at the forward part ol thesaid lever, a. reek pivoted by its upper end to said a-rz'n on an axisat a right angle to the '7 ol' the said lever and with a portion of thesaid rank forward of the central portion of the easedront, a dialdetachably mounted on the said ease-front, a rotary shaft, pointer, andpinion mounted on the said dial to he removed ti'ierowith, and to heplaced in. position with the inner end of the said shaft having ahearing in the central portion of the case front while the pinion i:-;in enga 'einent with the said rack, and a tening; new for the diallocated to one side of the pinion \rithfthe bed of the rack pa e ingi'lll'OlfQii the .snaee i L.1'\.((i1 the Said screw and pinion.

(i. in a Plgiliig i-a-lo, the eonihinaiim of a hast- 3th the u so, sidesand ion in one piere with ihenieoir d e portion oi 2; which piece formsthe lot: with a flange at the rear edge, a soparately-l oriLed easwlront30- cnrod to the front edge of the Said sides and top, a.Sena-rmlily-formed main frame the weighing mechanism with the major partthereof mounted on the said frame, the said l'raine hoin r securedwithin the rear part of the ease ith a spat-e heiwoen it and the roarflange oi the sides and top, and alacl; Hiipl'itd in from lielon intothe space l'OUHLH the i said flange and frame, the said sides, 'l'rontand hark l'einp; mounted on the top of and secured to the Said lane.

oiaonon inninnn.

the inid

